Wrench.



J. E. GARTMILL.

WRENCH. APPLICATION FILED MAR.1'I, 1913.

1,078,901. Patented Nov. 18, 1913.

2 SHEETS-SHEET 1.

J. E. GARTMILL.

WRENCH.

APPLIOATION I'ILED MAR.17, 191s.

Patented Nov. 18, 1913.

2 SHEETSSHBET 2.

81mm 3 E- CARTPHLL PMNOUIZAPH CD-,WASNINOTON D c nnrr Jon-1v nnwnnncanrmnr, or BOSEVI'LLE, wast VIRGINIA.

WRENCH.-

Specification of; Letters Patent.

Application filed March 17, 1913.

Patented Nov. 18, 1913.

Serial No. 754,988.

7 To all whom/it may concern Be it known that I, JOHN-EDWARD CART- MILL, citizen of the United Statearesiding at Ro'seville, inthe county of V-F'ayette and State of-lV'est Virginia, have invented oer.- tain newand; useful Improvements in Wrenches,.of which the, following is a specificati-on, reference being had to: the. accompanying drawings.

This invention relates to new and useful improvements in wrenches, the object ofthe invention being: to provide a wrench of .the quick adjusted type wherein the shank of the; wrench isprovided with, two opposed sets of rackvteeth: adapted to be engaged by pivoted pawls'carried'by the movable jaw to retain said jaw against sliding: movement upon the shank in: either direction.

Another object-0f the invention resides; in EhG PIOV-lSlOILOf new and novel means for mounting the pawls whereby a maximum of E durability is obtained.

A. further object of the invention-is-to; providea wrench of the above character of? very simple constructionembodying means; for. obtaining a very minute adjustment of the movable aw.

Arstill' furthenobject of' the invention-is: to provide a wrench which will possessadvantages in points of efliciency and durinhiliity is inexpensive to manufacture and at the: same time is simple in construction. and 1 operation.

With the above and other objects in'view, the invention consists in the novel features;

of construction and the combination and arrangement of parts to be hereinafter =1nore fully described, polnted out in the clalms and shown in the accompanying drawings,

in which-- longitudinal sectional view ofthe' movable aw, the a'ctuatingparts being removed; and Fig. 6 is a vertical sectionalview through themovable jaw, taken on the line 6.6 of Fig. 5. F ig.-7 is a sectional view taken on the line 77 of Fig. 2.

Referring more particularly to the drawings, 1 indicates the shank which-is provided at one end with a handle member 2 and having formed at'its other end a-stationary jaw 3. One face of the shank isprovided with the two opposed sets of teeth l and 5 respectively, the teeth 4!; being somewhat larger in construction than the teeth 5.

Slidably mounted upon the shank Lis the movable jaw 6 which is provided with a cavity 7 in .which are pivotally mounted the pawlsy8 and 9, said pawls being adapted to alternately engage the teeth a upon'thefaice ofthe shankl to hold said jaw in various adjusted positions. It will beapparent from the construction shown in the drawings that the pawls; 8 and 9 are adapted to holdthe jaw against backwardunoveinent upon the shankingmovernent of the jaw, Iprovide awpi-v.- oted pawl 10 arranged within the cavity 7 and adapted to engage with the teeth 5, said pawl being normally held zintoeengagement Inorder to limit the outward slidwith the; teeth by 'means of azc0il sprin'g ll which is disposed between the wall ofthe-cavity;

The pawlsv 8 and 9qare normallyheld into engagement" with the teeth 4t by 'means of .pawland one ranged within: EhQQIGCQSST 13 formed :inathe intermediate portion of the pawl" The thecoil-spri-ng 12, one end of which is arthat the tension of the spri-ng against the intermediate portion offthe pawl 8 will normally hold theqsame into engagement with the teeth, said spring also pressing: against the outerend ofgthepawl 9 to hold the inner end thereof into engagement with-the teeth 4. j The pawls-S and 9 are so arranged that they will alternately engage the teeth 4: whereby a minute adjustment ofthe movable-j aw :will be obtained. ily: understood that-while one-ofth'e pawls is engaged with the teeth l, the other is-dis: posed halfway between the teethsothat a slight movement ofthomovable j aw upon It will bereadi theshank 1' will disengage the first pawl and engage thesecondpawl with the teeth, thus obtaining a minute; acljust1nent.-

Slidably. mounted within suitable guides 16 is, a plate 17 which is providedwith-a fingerholdlS projecting-through tIl QlOIL.

gated opening 19 in the movable and having its outer face corrugated, as shown at 20, so that the same may be quickly and readily manipulated. Formed uponthe; nerface of the plated? j isa lug; 21, wh ch.

is adapted to engage with the projecting pointed end :22 of the pawl 10 to disengage the same from the teeth 5, when so desired. Thus it will be apparent that upon the slid ing movement of the plate 17, the pawllO will be disengaged from the teeth 5 to permit outward movement of the movable aw. Slidably mounted within the front side of the cavity 7 is a second plate 23, having a finger held 24: formed upon the outer face thereof and projecting through the opening 25, said finger hold being provided upon its outer face with suitable corrugations 26, whereby the same may be readily engaged by the thumb or finger to actuate the plate 23. The plate a3 is provided upon its inner face with a suitable recess 27 adapted to re ceive the projecting end 15 of the pawl 9 whereby upon the manipulation of the plate, said pawl will be disengaged from the teeth 4:. Upon the sliding movement of the plate 23, one end thereof will engage with the projecting lip 28 formed upon the outer end of the pawl 8 whereby the two pawls 8 and .9 will be simultaneously disengaged from the teeth to permit the movable jaw 6 to be moved forwardly upon the shank toward the jaw 3.

' From the above description it will be readily apparent that by the construction and arrangement of the pawls 8, 9 and 10 that the movable jaw 6 will be rigidly held in an adjusted position against the movement in either direction upon the shank. It will also be apparent that the jaw 6 may be quickly and easily released for movement in either direction by actuating either of the plates 17 and 23.

It will be apparent from the above description taken in connection with the accompanying drawings, that I have provided a simple and durable wrench which is of very simple construction and embodying means for obtaining a very minute adjustment of the movable It is also apparent that the device is extremely simple in construction and can be manufactured at a comparatively low cost.

While I have shown and described the preferred form of my invention, it will be obvious that various changes in the details of construction and in the proportions may be resorted to for successfully carrying my invention into practice without sacrificing any of the novel features or departing from the scope of the a pended claims.

What I claim is 1. A wrench including a shank having a stationary jaw formed at one end, said shank having two sets of opposed teeth arranged upon one side thereof, said jaw being provided with a cavity, a pair of pivoted pawls arranged within said cavity and adapted to alternately engage one set of teeth and a third pivoted pawl arrang d within the cavity and adapted to engage the other set of teeth whereby the movable jaw is securely held against movement in either direction and means for releasing said pawls to permit movement of the jaw in either direction. 7

2. A wrench including a shank having a stationary jaw at one end, said shank having two sets of opposed teeth formed upon one face thereof, a movable jaw slidable upon the shank and having a cavity formed therein, a pair of spring held pivoted pawls arranged in one side of the cavity and adapted to alternately engage one set of teeth, a third spring held pivoted pawl adapted to normally engage the other set of teeth whereby the jaw is held against movement in either direction, and means for releasing said pawls,

3. A wrench including a shank having a stationary jaw at one end, said shank having two sets of opposed teeth formed upon one face thereof, a movable jaw slidably mounted upon said shank and having a cavity in one side thereof, a pair of pivoted pawls arranged in one side of the casing and adapted to alternately engage one set of teeth, a coil spring having one of its ends engaging the intermediate portion of one of the pawls and its other end engaging with the outer end of the other pawl, whereby said pawls will be normally held in engagement with the teeth, a third spring held pivoted pawl mounted in the cavity upon the opposite side thereof and adapted to nor mally engage theother set of teeth whereby the movable jaw will be held against movement in either direction, and means for releasing said pawls.

4:. A wrench including a shank having a stationary jaw at one end, said shank being provided upon one face with two sets of opposed teeth,a movable jaw slidably mounted upon the shank and provided at one side with a cavity, a pair of spring held pawls adapted to alternately engage one set of teeth, a third spring held pawl mounted in the cavity and adapted to engage the second set of teeth to hold said jaw against movement, and sliding plates'mounted within said cavity and adapted to engage the outer ends of said pawls to release the same and permit the movable jaw to move in either direction.

5. A wrench including a shank having a stationary jaw at one end, said shank being provided upon one face with two sets of opposed teeth, a movable jaw slidably mounted upon the shank and having a cavity at one side thereof, spring held pivoted pawls mounted within one side of the cavity and adapted to alternately engage one set of teeth, a third pawl arranged within the cavity and adapted to normally engage the second set of teeth, said pawls being provided whereby the plates may be readily manipulated to release the pawls.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

JOHN EDWARD CARTMILL. Witnesses:

J. R. CALDWELL, J. M. BUOKLAND.

with outwardly projecting ends, sliding plates mounted within the cavity and adapted to engage said outwardly projecting ends to release the pawls from engagement with the teeth to permit the movable jaw to be moved in either direction, and finger holds formed upon said plates and adapted to projeot out through one side of the movable jaw Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

